retrievalqachain

type Chain struct {
	// Retriever used to retrieve the relevant documents.
	Retriever llm.Retriever

	// The chain the documents and query is given to.
	CombineDocumentsChain llm.Chain

	// The input key to get the query from, by default "query".
	InputKey string

	// If the chain should return the documents used by the combine
	// documents chain in the "source_documents" key.
	ReturnSourceDocuments bool
}